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Not an API compatibility proof. x402 $0.015 USDC on Base.","method":"POST","parameters":[{"default":null,"description":"","enumValues":[],"example":"previous","group":"body","name":"compare_to","required":false,"type":"string"},{"default":null,"description":"","enumValues":[],"example":"w_0123456789abcdef0123456789abcdef","group":"body","name":"watch_id","required":false,"type":"string"}],"pricing":{"amount":"0.015","currency":"USDC","maxAmount":"","minAmount":"","network":"eip155:8453","scheme":"exact"},"providerName":"","quality":{"l30DaysTotalCalls":"3","l30DaysUniquePayers":"1"},"serviceName":"Fresh402","tags":["document-comparison","json-diff","html-diff"],"url":"https://api.fresh402.com/v2/smart-diff"},{"description":"Observe code, standard proxy slots, common getters, explicitly selected storage/ABI and bounded selected events at one finalized Base address; optionally compare an owned prior snapshot. Selected single-provider evidence only; unknown controls remain unknown. 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Save the owned cursor and use a new paid operation for the next page. Not full native/internal/NFT/transaction history; provider-reported logs cannot prove completeness. Parameters/recovery: https://fresh402.com/docs/tools#blockchain","method":"POST","parameters":[{"default":null,"description":"","enumValues":[],"example":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","group":"body","name":"address","required":false,"type":"string"},{"default":null,"description":"","enumValues":[],"example":"finalized","group":"body","name":"block","required":false,"type":"string"},{"default":null,"description":"","enumValues":[],"example":8453,"group":"body","name":"chain_id","required":false,"type":"number"},{"default":null,"description":"","enumValues":[],"example":[],"group":"body","name":"tokens","required":false,"type":"array"}],"pricing":{"amount":"0.02","currency":"USDC","maxAmount":"","minAmount":"","network":"eip155:8453","scheme":"exact"},"providerName":"","quality":{"l30DaysTotalCalls":"3","l30DaysUniquePayers":"1"},"serviceName":"Fresh402","tags":["base","wallet-observation","erc20-transfers","finalized-state"],"url":"https://api.fresh402.com/v3/wallet-watch"},{"description":"Seed or review a public JSON OpenAPI 3.0/3.1 contract against its saved baseline/latest observation; return directional compatibility/security findings and explicit uncertainty. 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Shared RPC cache; at most 18 reads. Wallet scope remains a restricted pilot; no complete history or security score.","method":"POST","parameters":[{"default":null,"description":"","enumValues":[],"example":8453,"group":"body","name":"chain_id","required":false,"type":"number"},{"default":null,"description":"","enumValues":[],"example":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","group":"body","name":"contract_address","required":false,"type":"string"},{"default":null,"description":"","enumValues":[],"example":"0xFAC492A8D7843C9aFCCa6A1691BCCB5425ab14F3","group":"body","name":"wallet_address","required":false,"type":"string"}],"pricing":{"amount":"0.025","currency":"USDC","maxAmount":"","minAmount":"","network":"eip155:8453","scheme":"exact"},"providerName":"","quality":{"l30DaysTotalCalls":"1","l30DaysUniquePayers":"1"},"serviceName":"Fresh402","tags":["base","contract-and-token-evidence","selected-wallet-transfers","agent-workflow"],"url":"https://api.fresh402.com/v4/workflows/onchain-evidence-brief"},{"description":"Seed or compare one owned, scoped public document; return meaningful structural/attribute changes, compact evidence and retained comparison identity from one validated fetch.","method":"POST","parameters":[{"default":null,"description":"","enumValues":[],"example":"https://example.com/docs","group":"body","name":"url","required":false,"type":"string"}],"pricing":{"amount":"0.005","currency":"USDC","maxAmount":"","minAmount":"","network":"eip155:8453","scheme":"exact"},"providerName":"","quality":{"l30DaysTotalCalls":"1","l30DaysUniquePayers":"1"},"serviceName":"Fresh402","tags":["website-change-monitoring","documentation-updates","agent-workflow"],"url":"https://api.fresh402.com/v4/workflows/website-change-intelligence"}],"enriched":false,"iconUrl":"https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793758835/bazaar-icons/ff5e17044e175886.png","id":"api-fresh402-com","integrationType":"","isNew":false,"name":"api.fresh402.com","networks":["Base"],"priceSummary":{"avgCostBasis":"exact","avgCostPerTransaction":"0.015455","currency":"USDC","maxAmount":"0.04","minAmount":"0.005"},"provider":"api.fresh402.com","providerUrl":"","serviceName":"Fresh402","tags":["website-change-detection","source-freshness","http-revalidation","web-extraction","structured-content","html-json-rss","openapi-compatibility","api-contract-diff","breaking-change-review","document-comparison","json-diff","html-diff","base","smart-contract-observation","finalized-state","proxy-changes","token-metadata","erc20-facts","wallet-observation","erc20-transfers","api-breaking-change-detection","coding-agents","release-evidence","documentation-updates","contract-and-token-evidence","selected-wallet-transfers","agent-workflow","website-change-monitoring"]},"source":"agentic_market","summary":""},"body_sha256":"8adb1e7fe891d2a3f2233d44d71fecaf2c870623e7f558658c6bafabc01b736e","prev_id":3756271,"leaf":"0x4bec08a1b3e8e9676ca5cd88c0a5a7793a719b4060ab88a724027a186f1efcfe","leaf_text":"{\"body\":\"8adb1e7fe891d2a3f2233d44d71fecaf2c870623e7f558658c6bafabc01b736e\",\"id\":3959577,\"kind\":\"listing\",\"method\":\"sync.agentic_market/1\",\"observed_us\":1794076212925212,\"prev\":3756271,\"subject\":\"agentic_market:api-fresh402-com\",\"subject_kind\":\"source_record\"}","day":{"day":"2026-11-07","leaves":195826,"root":"0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d","chained":"0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb","anchor_chain":"eip155:5042002","anchor_tx":"0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa","anchor_block":71280839},"proof":["0x4bec23288208d4e809199036da13899aa69ea12f7af803e40eb7ba359e1ed83b","0x8ab95143691247cd1e7a052ba06b6d5c3dc92094abbef4be5a3d1a47429bd0de","0x3d3b001cb49ad78a4f73ca601394417cdbdf05df84c7d88da6a606da2efb90bb","0x84f42ff60419b305d883a15d83f0e0b8f6918996a14b74764c4b1541938c6dab","0x3a4c395865fd015731a131c82638ddd27df10c805f9e8a9342c605a26c1119a6","0x499e368292ce4a6168927a512e53ec582a16dd4e636371a54a2d0e7fa99ad49f","0x27994c292bec3706b6cf6e4bd16684d3f7bc7e49a42a38798af8b071cde0e38b","0x171ceceeaa4b053ee7e9cf0a47472f5c6abbaf5c552b30079ed7c2129fff766e","0xbf1eba11a744f9cca1df2a91cc61a75916e9c320a179503d620fb42319061412","0x358ace30fe91ad61446fb4489856f449487a9da6ca79915c28ed4a8088e7c33a","0xb3d003ae0a6a013735c1e039fb6d3afd90831c5d96f207c869371acd36f821bc","0x61d7260dfa61cf6be06f4d379779b36f495bc0b4a80fd28f16025245d2fffd79","0x9da5d20b5fb1961ee21cddbb09c2bcc37e0126a8a9f9bec5a9ba8207fa6b6afb","0xd65824e287abd80d02260ba918668ef1c4c1d016243891677bfc31ebb1eb16e7","0x1440bd4864ece4f3cb1a2fc48e88ddbd78cefd359ae16ceeb69a13e36b55021a","0xf0a56561418cd0342a328707933cc222d8fa725efff7ffd081e0226ee8c46c0b","0x54292a94f447f1fd33c01b5c99da465043f11022958626a2ea562c457fef697a","0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c"]}